RESUMO
Cordyceps， a unique precious Chinese herbal medicine in China， has the effects of tonifying the kidney and lungs， stopping bleeding， and resolving phlegm. It has definite clinical effects on diabetes， respiratory diseases （such as chronic obstructive pulmonary disease）， chronic kidney diseases， slow arrhythmia， and hyperlipidemia. We searched China National Knowledge Infrastructure （CNKI）， Wanfang Data， VIP， SpringerLink （Biomedical Sciences）， Embase， Proquest （Life Sciences）， PubMed， Cochrane Library， and SinoMed for the research on the arsenic content in Cordyceps. According to statistical analysis， arsenic in Cordyceps mainly exists in the non-toxic or low-toxic form. The arsenic-containing compounds in Cordyceps may be an arsenic-sugar compound with anticancer effect. The inorganic arsenic content in Cordyceps is lower than the arsenic standard stipulated by the State Food and Drug Administration. It remains uncertain whether different measurement methods can affect the results. The total arsenic content varies in Cordyceps from different producing areas， and the general rule of total arsenic content in Cordyceps produced in different provinces， districts， and counties cannot be obtained from the results of the existing studies. The arsenic content in Cordyceps is mainly concentrated in the insect part， which is significantly different from that in stroma， and no arsenic is detected in the mycelia. The soil arsenic content in the growing areas is generally high， which may be a main reason for the high arsenic content in Cordyceps. As a valuable medicinal material for tonifying and nourishing， Cordyceps still plays an irreplaceable role in disease prevention， health care， chronic disease management， and rehabilitation.
RESUMO
Objective:The arsenic content of drinking water in Aksu Prefecture of Xinjiang Uygur Autonomous Region (referred to as Xinjiang) was analyzed to understand the distribution of arsenic content and arsenic form of water in each county and city.Methods:In 2020, a total of 117 waterworks and villages (towns) under the jurisdiction of waterworks in 7 counties and 2 cities were randomly sampled, arsenic content in water was detected by atomic fluorescence spectrometry, and arsenic form in water was detected by liquid chromatography atomic fluorescence spectrometry.Results:A total of 626 water samples were collected, 614 water samples with water arsenic content < 0.01 mg/L, accounting for 98.08%; 12 water samples with water arsenic content 0.01 - < 0.05 mg/L, accounting for 1.92%; and there was no water sample with arsenic content ≥0.05 mg/L. The form of arsenic in excessive water sample in Aksu Prefecture was found to be five-valent arsenate. The arsenic content in the water of Awati County was the highest (0.004 6 mg/L).Conclusions:There are still some counties and cities with high arsenic content in water in Aksu Prefecture, and there are still hidden dangers of drinking-water brone endemic arsenism. Therefore, the water treatment technology should be improved or the water sources should be changed to prevent endemic arsenism.